APA引文

Hawking, S. W., & Penrose, R. (2010). The nature of space and time (13th print.). Princeton University Press.

芝加哥风格引文

Hawking, S. W., 与 Roger Penrose. The Nature of Space and Time. 13th print. Princeton, N.J.: Princeton University Press, 2010.

MLA引文

Hawking, S. W., 与 Roger Penrose. The Nature of Space and Time. 13th print. Princeton University Press, 2010.